Window-screen.



J. NYE.

WINDOW SCREEN` MVLwATloN MLM) MAY 22,1914.

1,1 1 9,863, Patented Dec. 8, 19111 2 SHEETS SHEET 1. ZI c-Wfl J. NYE.

WINDOW SCREEN.

APPLICATION FILED MAY 2z, 1914.

1 1 1 9,863. Patent-,ed Dec. 8, 1914.

JOHN NYE, DF MONTPELIER, OHIO.

WINDOW-SCREEN.

Speoication of Letters Patent.

IPatented Dec. 8, 1914.

Application led Hay 22, 1914. Serial No. 840,315.

of reference marked thereon, which form as part of this specification.

My present invention relates to roller window screens, its primary object being the improvement of screens of the type disclosed in my previous patent dated January 30, 1912, Serial No. 1,016,088. In this connection one advantage possessed by the construction to be later disclosed consists in an improved brake mechanism for counterbalancing the action of the winding spring of the screen holding roller.

A still further object consists in the provision of a novel mechanism for tensioning the brake and securing it in proper tensioned condition.

lVith these and minor objects in view my invention will be more fully described, illustrated in the accompanying drawings and then specifically pointed out in the claims which are attached to and form a part of this application.

In the drawings Figure 1 is a front elevation partially in section; Fig. 2 is a vertical section on the line 2-2 of Fig. 1; Fig. 3 is a transverse section on the line 3-3 of Fig. 2; Fig. 4 is an end elevation; Fig. 5

is an enlarged section on the line 5-5 of Fig. 1; Fig. 6 is a detail plan View of the connection between the spring roller and the netting; Fig. 7 is an nnassembled perspective of' the brake mechanism; Fig. 8 is a view similar to Fig. 1, showing the invention applied to a double window.

In the drawings, in which like reference numerals designate corresponding parts throughout, the frame includes an upper bar 10, side bars 11, and a lower bar 12. The screen proper includes a spring wound roller indicated as a whole by the numeral 13 and the netting 14 associated therewith. A casing consisting of the weather guard 15, end plates 16, and bottom plate 17, in-

closes the roller, the latter being slotted at 18 for the passage of the netting. The roller is in the form of a hollow drum provided centrally with a slot 19 to receive the rebent terminal of a link 20, the oppositely rebent terminal of which engages through a slot 21 in the `upper binding strip 22 of the upper end of the netting. The side bars 11 are channeled, as shown, to receive the side edges of the netting and the ends of the lower binder 23. They are also recessed at intervals to receive the spring pressed bolts 24 mounted in the lower binder and manually retractable. These bolts permit locking of the screen in a number of selected positions.

Spaced blocks 25 and 26 close one end of the roller 13 and form journal bearings for the pin 27 which is notched intermediate its length to receive the hooked inner end o a coil spring 28 mounted between the blocks. The other end of the spring is joined to the roller by detachable engagement of a rivet 281, carried by the spring, in a T-slot formed in the roller, so that turning of the latter upon the pin in one direction will tighten the spring. The outer end of the pin extends through the end plate 16 and terminates in a crank arm 29 which may be locked in adjusted positions by a pin 30 insertible in any one of a plurality of perforations 31 formed in the end plate and having the crank arm engaging eye 30. 'The spilng 28 may therefore be tensioned at w1 The abofe structure save for the fastening of the spring 28 is substantially the same as that disclosed in my above mentioned patent and no further description is therefore necessary.

The opposite end of the roller is closed by a block 32 spaced slightly from the end. This block is formed with a central bore and at opposite sides is provided with diametrically extending straps 33 and 34 having alining bores, that-of the former being threaded. If the block is of metal the strap 34 may be cast integrally with it. The strap 34 'at one end has an outwardly directed lug 35. A second pin 36 extends through the adjacent end plate 16 through the strap 34, block 32 and has threaded engagement through' the strap 33. As will be appreciated the pins 27 and 36 serve as trunnions for revolubly supporting the roller. For a 4 41 carried by the end plate, having flattened faces to engage the edges of the slot whereby the pin is held against rotation. Said outer end of the pin is also threaded to receive a winged clamp nut 42.

The general operation of the screen roller will be readily understood by reference to the drawings. In raised position of the screen the parts are so adjusted that the strap nut 34 bears against the block 32 and the. disk 38 against the end plate 16, the friction between the disk and said plate having been regulated by winged clamp nut 42. When the screen is drawn downward the roller turns through practically its entire first revolution without turning the disk until the latter is taken up by engagement of the lugs 35 and 39. By this time the pressure between the disk and end plate 16 has been relieved due to turning of the pin 36 in the strap nut 34. The brake therefore offers no resistance to the lowering of the screen. Upon releasing the screen however, to permit the spring 28to wind it upon the roller the latter turns until its lug 35 engages the opposite side of the lug 39 when the roller and diskY turn together. The turning of the pin through the nut 34 therefore draws the disk into frictional engagement with the end plate 16 as'the screen becomes wound, thus acting to retard and finally stop the roller when the screen is completely Wound up.

In the construction shown in Fig. 8 the weather guard is lengthened to extend across the top of a double window and provided centrally with spaced partition plates 43 through which the pins 36 extend and against which the disks bear. Otherwise the construction is the same, two rollers, one for each window being employed.

Having described my invention and set forth its merits, what I claim is 1. In a roller screen construction, a casing having end plates, a screen carrying spring roller mounted between'the end plates, and a brake automatically acting upon the roller during winding of the screen thereon, said brake including a disk movable into and out of frictional engagement with one of the end tes, and means operable by turning of th roller for removing the disk.

2. In a roller screen construction, a casing 'having endplates, a lhollow roller mounted between'- the end platesand carrying a screen,

a spring mounted in one end of the roller an operatively connected thereto by a rivet engaging through a T-slot in the roller, a trunnion pin operatively connected to the opposite end of the spring and journaled in the adjacent end plate, a block fixed in the opposite end of the roller, a trunnion pin carried by the block and extending through the adjacent end plate, and a brake mechanism carried and controlled by said latter trunnion pin.

3. In a roller screen construction, a casing having end plates, a screen carrying spring roller mounted between the end plates, said roller being hollow, a block fixed 1n one end of the roller, a nut mounted uponv the block for movement toward and awa from the block, a trunnion pin passed through the adjacent end plate and block and threaded into the nut, a friction disk mounted on said pin between the block and end plate, the block and disk having interengaging lugs, and means for locking the trunnion pin against turning ,movement with respect to the end plate.

4. In a roller screen construction, a cas'- ing having end plates, a screen carryin spring roller mounted between the en plates, said roller being hollow, a block fixed in one end of the roller, a nut mounted upon the block for movement toward and away from the block, a trunnion pin passed through the adjacent end plate and block and threaded into the nut, a friction disk mounted on said pin between the block and end plate, the block and disk having interengaging lugs, and means for locklng the trunnion pin against turning movement with respect to the end plate, said means permitting adjustment of the pin through the nut.

5. In a roller screen construction, a casing having end plates, a screen carrying sprin roller mounted between the end plates, sai roller beinghollow, a block fixed in one end of the roller, av nut mounted upon the block for movement toward and away from the block, a trunnion pin passed through the adjacent end plate and block and threaded into the nut, a friction disk mounted on said pin between the block and end plate, the

lock and disk having interengaging lugs, and means for locking the trunnion pin against turning movement with respect to the end plate, said means including a slotted plate carried by the end plate, the slot of which receives the flattened terminal of the pin, and a wing nut threaded upon said terminal.

6. In a roller screen construction, a casing having end plates, a screen carrying roller mounted between the end plates, pins carried by the roller and extending through the end plates to support the roller, a spring operatively connected to the roller andcontained atively connected to the spring, said pin having a crank arm at its outer end, and a locking pin provided with a crank engaging eye adapted for insertion in any one of a plurality of perforations formed in the end plate to adjustably lock the crank arm.

4'In testimony whereof I aix my signature in presence of two witnesses.

Vitnesses:

J. V. BLAIER, WILL D. KNEcnr.

JOHN NYE. 

